|
|
|
|
|
# Docker入门手册
|
|
|
|
|
|
|
|
|
|
|
|
## Docker 镜像常用命令
|
|
|
|
|
|
### 搜索镜像
|
|
|
|
|
|
docker search java
|
|
|
|
|
|
### 下载镜像
|
|
|
|
|
|
- docker pull java:8
|
|
|
|
|
|
- docker pull macro/eureka-server:0.0.1
|
|
|
|
|
|
### 列出镜像
|
|
|
|
|
|
docker images
|
|
|
|
|
|
### 删除镜像
|
|
|
|
|
|
- docker rmi java
|
|
|
|
|
|
- docker rmi -f java
|
|
|
|
|
|
- docker rmi -f $(docker images)
|
|
|
|
|
|
|
|
|
|
|
|
## Docker 容器常用命令
|
|
|
|
|
|
### 新建并启动容器
|
|
|
|
|
|
docker run -d -p 91:80 nginx
|
|
|
|
|
|
### 列出容器
|
|
|
|
|
|
docker ps
|
|
|
|
|
|
### 停止容器
|
|
|
|
|
|
docker stop $ContainerId
|
|
|
|
|
|
### 强制停止容器
|
|
|
|
|
|
docker kill $ContainerId
|
|
|
|
|
|
### 启动已停止的容器
|
|
|
|
|
|
docker start $ContainerId
|
|
|
|
|
|
### 进入容器
|
|
|
|
|
|
- docker inspect --format "{{.State.Pid}}" $ContainerId
|
|
|
|
|
|
- nsenter --target "$pid" --mount --uts --ipc --net --pid
|
|
|
|
|
|
### 删除容器
|
|
|
|
|
|
- docker rm $ContainerId
|
|
|
|
|
|
- docker rm -f $(docker ps -a -q)
|
|
|
|
|
|
### 查看启动错误日志
|
|
|
|
|
|
docker logs $ContainerIdName(或者$ContainerId)
|
|
|
|
|
|
### 查看容器的IP地址（172.17.0.*）
|
|
|
|
|
|
docker inspect --format '{{ .NetworkSettings.IPAddress }}' $ContainerId
|
|
|
|
|
|
### 同步宿主机时间到容器
|
|
|
|
|
|
docker cp /etc/localtime $ContainerName:/etc/
|
|
|
|
|
|
### 在宿主机查看docker使用cpu、内存、网络、io情况
|
|
|
|
|
|
- 查看指定容器情况：docker stats $ContainerName
|
|
|
|
|
|
- 查看所有容器情况：docker stats -a
|
|
|
|
|
|
### 进入docker内部的bash
|
|
|
|
|
|
docker exec -it $ContainerName /bin/bash
|
|
|
|
|
|
|
|
|
|
|
|
## Docker Registry
|
|
|
|
|
|
### Docker Registry 2.0搭建
|
|
|
|
|
|
docker run -d -p 5000:5000 --restart=always --name registry2 registry:2
|
|
|
|
|
|
### 推送到私有仓库
|
|
|
|
|
|
docker push localhost:5000/macro/eureka-server:0.0.1
|
|
|
|
|
|
### 修改镜像标签
|
|
|
|
|
|
docker tag macro/eureka-server:0.0.1 localhost:5000/macro/eureka-server:0.0.1
|
|
|
|
|
|
|
|
|
|
|
|
## 使用maven构建Docker镜像
|
|
|
|
|
|
### 构建镜像
|
|
|
|
|
|
- command：mvn clean package docker:build
|
|
|
|
|
|
- tip：
|
|
|
|
|
|
Linux服务器需要开启远程api:vi /usr/lib/systemd/system/docker.service
|
|
|
|
|
|
修改为：ExecStart=/usr/bin/dockerd -H tcp://0.0.0.0:2375 -H unix://var/run/docker.sock
|
|
|
|
|
|
### 推送镜像到私有仓库
|
|
|
|
|
|
- command：mvn clean package docker:build -DpushImage
|
|
|
|
|
|
- tip：
|
|
|
|
|
|
pom.xml修改<imageName>192.168.1.71:5000/macro/${project.artifactId}:${project.version}</imageName>
|
|
|
|
|
|
- tip：
|
|
|
|
|
|
docker要支持http:echo '{ "insecure-registries":["39.98.190.128:5000"] }' > /etc/docker/daemon.json
|
|
|
|
|
|
### 修改Docker镜像存放位置
|
|
|
|
|
|
1. 查看Docker的存放位置：docker info | grep "Docker Root Dir"（默认为/var/lib/docker）
|
|
|
|
|
|
2. 关闭Docker服务：systemctl stop docker
|
|
|
|
|
|
3. 移动目录到目标路径：mv /var/lib/docker /root/data/docker
|
|
|
|
|
|
4. 建立软连接：ln -s /root/data/docker /var/lib/docker
|
|
|
|
|
|
|
|
|
|
|
|
## Docker compose
|
|
|
|
|
|
### 安装
|
|
|
|
|
|
1. 下载地址：https://github.com/docker/compose/releases
|
|
|
|
|
|
2. 安装地址：/usr/local/bin/docker-compose
|
|
|
|
|
|
3. 设置为可执行：sudo chmod +x /usr/local/bin/docker-compose
|
|
|
|
|
|
4. 测试是否安装成功：docker-compose --version
|
|
|
|
|
|
|
|
|
|
|
|
### 安装命令补全工具
|
|
|
|
|
|
sudo curl -L https://raw.githubusercontent.com/docker/compose/1.22.0/contrib/completion/bash/docker-compose -o /etc/bash_completion.d/docker-compose
|
|
|
|
|
|
|
|
|
|
|
|
### 常用命令
|
|
|
|
|
|
- 构建、创建、启动相关容器：docker-compose up
|
|
|
|
|
|
- 列出所有容器：docker-compose ps
|
|
|
|
|
|
- 删除指定服务的容器：docker-compose rm eureka
|
|
|
|
|
|
- 对容器进行动态扩容：docker-compose scale eureka=3
|
|
|
|
|
|
- 停止相关容器：docker-compose stop eureka
|
|
|
|
|
|
- 启动相关容器：docker-compose start eureka
|
|
|
|
|
|
|
|
|
|
|
|
### 编排SpringCloud微服务
|
|
|
|
|
|
#### 所使用到的工程
|
|
|
|
|
|
- eureka-server
|
|
|
|
|
|
- hello-service
|
|
|
|
|
|
- feign-consumer
|
|
|
|
|
|
- api-gateway
|
|
|
|
|
|
#### 编排模式
|
|
|
|
|
|
1. 编排SpringCloud微服务：见eureka-server/docker-res/docker-compose.yml
|
|
|
|
|
|
2. 简化SpringCloud微服务编排：见eureka-server/docker-res/docker-compose-simple.yml
|
|
|
|
|
|
3. 编排高可用的注册中心：见eureka-server/docker-res/docker-compose-eureka.yml
|
